Shaft-coupling.



No. 748,373. PATENTED DEC. 29, '1903.

D. H. HENDERSHUT.

SHAFT GOUPLING.

APPLICATION FILED SEPT. 8, 1903. N0 MODEL.

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daga, in the State of New York, have invented4 new and usefulImprovements in Shaft-Coup#` View of one of the sleeves.

UNITED STATES Patented December 29, 1903.

PATENT OEEIVCE.

SHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 748,373, datedlDecember29, 1903.

Application iiled September 8,' 1903. 4Serial No. 172.350. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL H. HENDER- sHoT, of Baldwinsville, in thecounty of Onon- 1ings,`of which the following, taken in connection withthe accompanying drawings, is a full, clear, and exact description.

i This invention relates to improvements in shaft-couplings in which twoouter sleeves are clamped together endto end and inclose a pair ofclamping-collars, which are drawn into frictional engagement with theshaftsections and sleeves for locking the parts together.

The primary object of this invention is to enable the' shaft-sections tobe readily and easily uncoupled and stillafford a simple and reliablecoupling when the parts are assembled upon the shaft-sections.

Itis well known that after a coupling has been in use for a considerableperiod of time during which it is subjected to severe torsional andendwise strains the shaft-sections frequently become cut and burred orroughened to such an extent as to render the loosening and removal ofthe parts very difiicult and that the jaws frequently become set orcorroded onto the shaft, which also materially interferes with thedisconnection of the coupling from the shaftsections. I have sought toremove these difficulties in the structure shown in the drawings, inwhich`- Figure'l is an end view of the parts of the couplings assembledin the shaft-sections. Fig. 2 is a sectional view taken on line 2 2,Fig. 1. Figs. 3 and 4 are respectively an outer end view and alengthwise sectional Figs. 5 and 6 are perspective views of one of theouter sleeves and one of the inner clamping-collars. Fig. 7 is alengthwise sectional view of one of the clamping-collars.

Loosely fitted upon the shaft'sections, as l and 2, are the hollowcylindrical sleeves 3 and 4, which are arranged end to end, there be-`ing one sleeve for each shaft-section, and each is movable endwise alongthe shaft toward an'd away from the other to permit the insertion andremoval of inner splitclamping-collars 5 and 6, which impinge directlyupon their respective shaft-sections. The

inner meeting ends of these sleeves 3 and 4 are open to receive thecollars 5 and6 and are formed with radial lugs or ears 7, havingapertures 8 to receive clamping-bolts, as 9, by which the sleeves 3 and4 are drawn together.

Each of the sleeves is formed with a transverse wall 10 nearits outerend, and each of these Walls is provided with a central shaftopening lland with apertures 12, which receive the outer endsrof the bolts 9.

There are preferably three of the apertnred lugs 7 on each sleeveequidistant from each other, and the end wall of each sleeve is formedwith a corresponding number of apertures 12, which are alined with theapertures in the lugs, so that when the bolts are passedthrough thealined apertures 8 and 12 and the nuts and heads engage with the outerend faces of the end walls 10 the sleeves are firmly drawn together, themeeting faces of one being formed with an annular tongue 13, whichenters an annular groove 14 in the other meeting face forthe purpose ofholding the sleeves in axial alinement and additionally strengtheningthe coupling against lateral strain.

The inner surface ofV each sleeve between the lugs 7 and end wall l0 iscircular in crosssection, but tapering longitudinally from its inner ormeeting end and is engaged by similar tapering surfaceson the inclosedclampin g-collar. These collars. are duplicates and are interchangeableand are each provided with a central shaft-opening 15v and withlengthwise grooves 16 in its periphery to receive the lugs 7 and bolts9.

After the sleeves 3 and 4. are placed upon their respective shafts thecollars 5 and 6 are inserted into the inner open ends 4of theirrespective sleeves and upon the meetingends of the shaft-sections, sothat when the collars are in operative positionV the lugs 7 are seatedin their respective grooves 16 and further lock the sleeves and collarsfrom independent rotation. The peripheries of these collars taper inopposite directions from their meeting ends and engage the taperinginner 'surfaces of the sleeves, and the portions of the collars betweenthe grooves are formed with lengthwise apertures 17 for receivingclamping-bolts 18, the inner ends of the aper- IOO tures 17 beingenlarged and angular or square in cross-section for receivingsimilarly-formed heads on the bolts 18. The lengthwise grooves in eachcollar correspond in number to the number of bolts 9, in this instancethree, and are arranged equidistant from each other circumferentially,the grooves of one collar being alined with those of the other collar toreceive said clamping-bolts' 9 and also the lugs 7. The bolt-openings17, in this instance three, are also arranged equidistant from eachother and between the grooves 16 and are alined with similar apertures19 in the end walls 10 for receiving the outer ends of the bolts 18. Itis now apparent that the apertures 12 in the end walls 10 are alinedwith the grooves 16 and receive the bolts 9 and that these bolts and thelugs 7 normally lie in the grooves 16, while the bolts 18 of one collarare alined with similar bolts in the other collar and are arrangedequidistant from each other between the bolts 9.

The collars 5 and 6 are somewhat shorter than the distance between theend walls 10 and the meeting faces of their respective sleeves 3 and 4to permit the collars to be drawn end wise a limited distance by thebolts 18 when the sleeves are clamped together by the bolts 9, it beingunderstood that the outer ends of the bolts 18 are provided withsuitable nuts, which engage the outer end faces of the heads or endwalls 10 to be engaged by a wrench or similar tool. Each of thesecollars 5 and 6 is split longitudinaly at 20 and at the base of one ofthe grooves where the stock is comparatively thin, so that when thecollars are drawn endwise from each other the wedging elfect due to theengagement of the tapering surfaces of the collars with those of thesleeves operates to compress the collars onto the shaft-sections,andthereby firmly couples the shaft-sections together, this movement beingeffected by the bolts 18 irrespective of the bolts 9.

When it is desired to uncouple the shaftsections, it is simply necessaryto release the bolts 9 and 18 and to then slide the sleeves 3 and Lendwise from each to uncover and release the collars 5 and 6, whichmovement may be facilitated by inserting a suitable drift-tool in anopening 21 or between the meeting faces of the sleeves, whereupon thejaws of the collars automatically spring out of engagement with theshaft-sections, and the latter may then be withdrawn.

Having thus'described my invention, what I claim, and desire to secureby Letters Patent, is-

1. A shaft-coupling comprising two separate hollow cylindrical sleevesarranged end to end and having their inner faces tapering longitudinallyfrom their meeting ends, the outer ends being formed with transversewalls, means within the sleeves for drawing the sleeves endwise towardeach other, separate and independently-movable split collars insertedinto the meeting ends of the sleeves wholly between the transverse wallsand inclosed by said sleeves, the collars having lengthwise-taperingsurfaces engaging the tapering inner surfaces of the sleeves andseparate devices for drawing the collars endwise from each other tocause the tapering surfaces to wedge against each other and therebycompress the collars onto the shaft.

2. A shaft-coupling comprising two separate hollow sleeves arranged endto end and having their meeting ends open and provided withradially-projecting apertured lugs and their outer ends formed with endwalls having shaft-openings and apertures alined with the apertures inthe lugs, said sleeves being movable endwise toward and from each other,clamping-bolts passed through alined apertures in the lugs and end Wallsfor drawing the sleeves together, separate split collars arranged end toend within the sleeves and having central shaftopenings and outersurfaces tapering lengthwise from their meeting ends and engaging theinner faces of the sleeves, 'said collars having lengthwise grooves intheir peripheries receiving the lugs of the sleeves, and separatedevices engaged with the collars and-with the end walls of the sleevesfor drawing the collars endwise from each other to wedge the collars intheir sleeves and thereby compress said collars on `the shaft.

3. Ashaft-coupling comprising two hollow sleeves arranged end to end andhaving their inner faces tapering lengthwise from their meeting ends,said meeting ends having an intermeshing tongue and groove and aperturedlugs and the outer ends having transverse walls formed withshaft-openings and with apertures alined with the apertures in the lugs,split collars within the sleeves having central shaft-openings andoutwardlytapering surfaces wedging with the tapering surfaces of thesleeves, said collars being formed with lengthwise grooves in theirperipheries receiving said'lugs, clamping-bolts passed through thealined apertures in the lugs and end walls of the sleeves for drawingthem together, said end walls being formed with additional apertures andthe collars having apertures alined with the additional apertures in thesleeves, and separate clamping-bolts for each collar passed through theapertures in said collars and also through the additional apertures inthe end walls of the sleeves for drawing the collars endwise from eachother for the purpose described.

In witness whereof I have hereunto set my hand on this 2d day ofSeptember, 1903.

DANIEL H. HENDERSHOT.

Witnesses: l

H. E. CHASE, HOWARD P. DENIsoN.

IOO

